In case you missed it in the comments, Kevin offers up how he created this modern take on a historic figure. He says:
The Lincoln portrait was done by pixelating a photo and boiling it down to 9 shades of gray (both done in Photoshop). I built the canvas, gridded it off in 2 inch squares, and mixed the different shades of paint. At that point it basically became a paint by number.
Brilliant, we think.